package com.atguigu.gulimall.order.config;

import com.atguigu.gulimall.order.entity.OrderEntity;
import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.amqp.rabbit.annotation.RabbitListeners;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.PutMapping;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

/**
 * @ClassName MQConfig
 * @Description TODO
 * @Detail detail
 * @Author MyPC
 * @Date 2020/7/25
 * @Version 1.0
 */
@Configuration
public class MQConfig {

    /**
     * 延迟队列
     * 使用@Bean注解，如果MQ中没有这些组件，那么会在MQ创建这些组件，如果已存在，则不会创建，即使参数发生改变
     * @return
     */
    @Bean
    public Queue orderDelayQueue(){
        Map<String,Object> arguments=new HashMap<>();
        arguments.put("x-dead-letter-exchange","order-event-exchange");
        arguments.put("x-dead-letter-routing-key","order-release-order");
        arguments.put("x-message-ttl",60000);
        //String name, boolean durable, boolean exclusive, boolean autoDelete, @Nullable Map<String, Object> arguments
        return new Queue("order.delay.queue",true,false,false,arguments);
    }

    /**
     * 存放死信队列
     * @return
     */
    @Bean
    public Queue orderReleaseOrderQueue(){
        return new Queue("order.release.order.queue",true,false,false);
    }

    /**
     * 交换机
     * @return
     */
    @Bean
    public Exchange orderEventExchange(){
        //String name, boolean durable, boolean autoDelete, Map<String, Object> arguments
        return new TopicExchange("order-event-exchange",true,true);
    }

    /**
     * 队列与交换机绑定
     * @return
     */
    @Bean
    public Binding orderCreateOrderBinding(){
        //String destination, Binding.DestinationType destinationType, String exchange, String routingKey, @Nullable Map<String, Object> arguments
        return new Binding("order.delay.queue",
                Binding.DestinationType.QUEUE,
                "order-event-exchange",
                "order.create.order",
                null);
    }

    /**
     * 队列与交换机绑定
     * @return
     */
    @Bean
    public Binding orderReleaseOrderBinding(){
        return new Binding("order.release.order.queue",
                Binding.DestinationType.QUEUE,
                "order-event-exchange",
                "order-release-order",
                null);
    }


    /**
     * 订单释放直接和库存释放进行绑定
     * @return
     */
    @Bean
    public Binding orderReleaseOtherBinding(){
        return new Binding("stock.release.stock.queue",
                Binding.DestinationType.QUEUE,
                "order-event-exchange",
                "order.release.other.#",
                null);
    }

    /**
     * 秒杀商品队列消峰
     * @return
     */
    @Bean
    public Queue orderSeckillOrderQueue(){
        //String name, boolean durable, boolean exclusive, boolean autoDelete, @Nullable Map<String, Object> arguments
        return new Queue("order.seckill.order.queue",true,false,false);
    }
    @Bean
    public Binding orderSeckillOrderQueueBinding(){
        //String destination, Binding.DestinationType destinationType, String exchange, String routingKey, @Nullable Map<String, Object> arguments
        return new Binding("order.seckill.order.queue",
                Binding.DestinationType.QUEUE,
                "order-event-exchange",
                "order.seckill.order",
                null);
    }



}
